Warehousing refers to the general term of material storage, storage and related storage activities through the warehouse. Warehousing is one of the important links of commodity circulation and also an important pillar of logistics activity. Import and export customs import and export goods by the consignee or consignor, head of the inbound and outbound means of transport, all inbound and outbound goods or their agents to the customs offices for handling the goods and articles or means of transport process of entry and exit formalities and related customs affairs, including declaration, submit the documents to the customs documents, and subject to customs supervision and inspection, etc.